Bigfoot: First DNA Analyses Of Sasquatch Published

Bigfoot is not wwhat you think it is as shown by this DNA analysis.


In North America, they are called Bigfoot or Sasquatch. In the Himalayan foothills, they’re known as yeti or abominable snowmen. And Russians call them Almasty.

But in the scientific laboratory, these elusive, hairy, humanoid creatures are nothing more than bears, horses, and dogs. That’s the conclusion of a new study—the first peer-reviewed, genetic survey of biological samples claimed to be from the shadowy beasts.

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First bigfoot DNA analysis ever published. Photo: DALE O’DELL/ALAMY

Supposed evidence for Bigfoot and its ilk comes from observers who spot apelike creatures darting through the woods or who find giant footprints in the mud. Bigfoot believers have various ideas about what the animals are, often revolving around the survival of a prehistoric humanoid. Yet many sightings have later turned out to be hoaxes, and scientific support for the existence of the primates is scant.

In 2012, researchers at the University of Oxford in the United Kingdom and the Museum of Zoology in Lausanne, Switzerland, put out a call for hair samples thought to be from anomalous primates. They received 57 hairs from Bigfoot enthusiasts and museums around the world, including samples from Washington, Texas, Oregon, Russia, and India—a few as old as 50 years. Some “hairs” immediately turned out not to be hairs at all, but rather plant or glass fibers; others were too worn to study.

The researchers, led by Oxford geneticist Bryan Sykes, focused on the remaining 37 samples, isolating and cleaning a 2- to 4-centimeter segment of each hair, many of which have been extensively handled by people, contaminating them with foreign DNA. To identify the evolutionary source of each sample, the team determined the sequence of a gene—found inside the mitochondria of cells—that encodes the 12S RNA, which is often used for species identification. Unlike standard DNA, mitochondrial genes are passed only from mother to offspring.

Seven of the samples didn’t yield enough DNA for identification. Of the 30 that were sequenced, all matched the exact 12S RNA sequences for known species, the team reports online today in the Proceedings of the Royal Society B. Ten hairs belonged to various bear species; four were from horses; four were from wolves or dogs; one was a perfect match to a human hair; and the others came from cows, raccoons, deer, and even a porcupine. Two samples, from India and Bhutan, matched polar bear 12S RNA—a surprising finding that Sykes is following up on to determine whether some Himalayan bears are hybrid species with polar bears.

The fact that the findings now appear in a peer-reviewed paper is key to bridging the gap between enthusiasts hoping to understand Bigfoot and professional scientists with access to modern labs.


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